18539620

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{47}}^1\times {\mathrm{163}}^1$

素因数の和:241

約数の個数: 72

約数和(自身を含む): 43972992

約数和(自身を除く): 25433372

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 47, 55, 94, 110, 121, 163, 188, 220, 235, 242, 326, 470, 484, 517, 605, 652, 815, 940, 1034, 1210, 1630, 1793, 2068, 2420, 2585, 3260, 3586, 5170, 5687, 7172, 7661, 8965, 10340, 11374, 15322, 17930, 19723, 22748, 28435, 30644, 35860, 38305, 39446, 56870, 76610, 78892, 84271, 98615, 113740, 153220, 168542, 197230, 337084, 394460, 421355, 842710, 926981, 1685420, 1853962, 3707924, 4634905, 9269810, 18539620]

約数ペア:

[(1, 18539620), (2, 9269810), (4, 4634905), (5, 3707924), (10, 1853962), (11, 1685420), (20, 926981), (22, 842710), (44, 421355), (47, 394460), (55, 337084), (94, 197230), (110, 168542), (121, 153220), (163, 113740), (188, 98615), (220, 84271), (235, 78892), (242, 76610), (326, 56870), (470, 39446), (484, 38305), (517, 35860), (605, 30644), (652, 28435), (815, 22748), (940, 19723), (1034, 17930), (1210, 15322), (1630, 11374), (1793, 10340), (2068, 8965), (2420, 7661), (2585, 7172), (3260, 5687), (3586, 5170)]